/*
 * Copyright © 2017 Alexander Rvachev
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package net.sf.xfd.provider;

import net.sf.xfd.SelectorThread;

import java.io.IOException;

public final class EpollThreadSingleton {
    private static volatile SelectorThread instance;

    public static SelectorThread get() throws IOException {
        if (instance == null) {
            synchronized (EpollThreadSingleton.class) {
                if (instance == null) {
                    instance = new SelectorThread();
                    instance.start();
                }
            }
        }

        return instance;
    }
}
